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RE: 38k4 Modem Considerations



The URL for the English language page is: 

http://www.symek.com/g/ifd.html 


Best regards,
Bernie, K3BAZ

-----Original Message-----
From: owner-AMSAT-BB@AMSAT.Org [mailto:owner-AMSAT-BB@AMSAT.Org] On Behalf
Of on4bcb@skynet.be
Sent: Friday, July 16, 2004 4:08 AM
To: cjhurst@bigpond.net.au; amsat-bb@AMSAT.Org
Subject: RE: [amsat-bb] 38k4 Modem Considerations

A good IF solution for 38K4 is a product made by symek in Germany
Use the translate option at www.altavista.com , select german => english
http://www.symek.com/d/ifd.html

Have fun

ON4BCB







Recent mails on the -bb have touched on 38k4 downlink requirements, hence
some words of advice.
When considering equipment for 38k4 ensure that the RS232 communications
capability from TNC to Computer is at least twice that of the downlink, viz:
for 38k4 this is 76k8 or higher.
Pressing an old computer or TNC into service when either has a com port of
38k4 maximum speed, may result in \"overflow\" errors.
Those with a spare 9k6 G3RUH Modem may consider modifying it to 38k4 using
the information contained in the following link
http://www.amsat.org/amsat/articles/g3ruh/109a.txt
This article also identifies the receiver bandwidth required for 38k4 as 60
kHz.
Modification to most amateur transceivers is required to achieve this
bandwidth.

Colin VK5HI.
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